The Bible describes a genetic
bottleneck event that occurred in human history. The Genesis flood killed
all humans except Noah, his wife, his sons, and their wives. Since all
males were genetically descended from Noah, but the females were
genetically diverse, we would expect that female genetic diversity would
be greater than male genetic diversity. This claim can be tested through
an examination of Genetic material found in mitochondria, the organelles that generate energy for the cell.mtDNA (Of or referring to the mitochondria, the organelles that generate energy for the cell.mitochondrialDeoxyribonucleic acid: the chemical inside the nucleus of a cell that carries the genetic instructions for making living organisms.DNA) compared to Y-chromosome
genetic diversity.

http://www.godandscience.org/evolution/sld021.html
Last Modified June 21, 2006